EP0829113B1 - Antenne unipolaire imprimee multibande - Google Patents
Antenne unipolaire imprimee multibande Download PDFInfo
- Publication number
- EP0829113B1 EP0829113B1 EP96916805A EP96916805A EP0829113B1 EP 0829113 B1 EP0829113 B1 EP 0829113B1 EP 96916805 A EP96916805 A EP 96916805A EP 96916805 A EP96916805 A EP 96916805A EP 0829113 B1 EP0829113 B1 EP 0829113B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- monopole antenna
- printed
- conductive trace
- circuit board
- printed monopole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/48—Combinations of two or more dipole type antennas
- H01Q5/49—Combinations of two or more dipole type antennas with parasitic elements used for purposes other than for dual-band or multi-band, e.g. imbricated Yagi antennas
Definitions
- the present invention relates to monopole antennas for radiating electromagnetic signals and, more particularly, to a printed monopole antenna including at least one radiating element formed on one side of a printed circuit board having an electrical length where the radiating element has a primary resonance within a first frequency band and a parasitic element formed on the opposite side of the printed circuit board designed to tune a secondary or higher mode resonant response of the radiating element within a second frequency band.
- monopole antennas mounted perpendicularly to a conducting surface provides an antenna having good radiation characteristics, desirable drive point impedance, and relatively simple construction.
- monopole antennas have been utilized with portable radios, cellular telephones, and other personal communication systems.
- monopole antennas have generally been limited to wire designs (e.g., the helical configuration in U.S. Patent 5,231,412 to Eberhardt et al.), which operate at a single frequency and associated bandwidth.
- U.S. Patent 4,356,492 to Kaloi discloses a microstrip antenna system including separate microstrip radiating elements which operate at different and widely separated frequencies while being fed from a single common input point.
- these radiating elements are directly connected with each other and require a ground plane which fully covers the opposite side of a dielectric substrate from such radiating elements.
- this design is impractical for monopole antenna applications, and indeed functions in a completely different manner.
- the lamina antennas disclosed by U.S. Patents 5,075,691 and 4,800,392 to Garay et al. require both a direct connection between radiating elements and a ground plane in order to provide multi-band operation.
- U.S. Patent 5,363,114 to Shoemaker discloses a planar serpentine antenna which includes a generally flat, non-conductive carrier layer and a generally flat radiator of a preselected length arranged in a generally serpentine pattern secured to the surface of the carrier layer.
- This antenna has a sinuous pattern with radiator sections in parallel spaced relation in order to provide dual frequency band operation.
- the two frequencies at which resonance takes place involves the length of each radiator section and the total length between first and second ends. While this arrangement is suitable for its intended purpose, it likewise is incapable of operating in the fashion of a monopole or dipole antenna.
- a monopole antenna to be developed which not only is operable within more than one frequency band, but also avoids the associated limitations of microstrip and lamina antennas. Further, it would be desirable for a printed monopole antenna to be developed which operates at more than one frequency band and is configured to require only a single radiating element.
- a primary object of the present invention is to provide a monopole antenna which is operable within more than one frequency band.
- Another object of the present invention is to provide a monopole antenna which can be constructed within very tight tolerances.
- Still another object of the present invention is to provide a printed monopole antenna operable within more than one frequency band.
- Yet another object of the present invention is to provide a monopole antenna which eliminates ground plane requirements found in microstrip and lamina antennas.
- Another object of the present invention is to eliminate direct electric connection between radiating elements of multi-band antennas.
- Still another object of the present invention is to provide a printed monopole antenna operable within more than one frequency band that requires only a single radiating element.
- a further object of the present invention is to provide a printed monopole antenna which tunes the secondary resonance of a radiating element within a second specified frequency band.
- Yet another object of the present invention is to provide a printed monopole antenna which can be easily configured for various frequency bands of operation.
- a printed monopole antenna including a printed circuit board having a first side and a second side.
- a monopole radiating element in the form of a conductive trace is formed on one side of the printed circuit board, wherein the conductive trace has an electrical length in which primary resonance occurs within a first specified frequency band.
- a non-resonant parasitic element is formed on the opposite side of the printed circuit board, wherein the parasitic element is designed to tune the conductive trace to a secondary resonance within a second specified frequency band. No direct connection between the monopole radiating element and the parasitic element exists, but the coupling between such elements causes the secondary resonance of the radiating element to occur within the second frequency band.
- the second frequency band does not include an integer multiple of the primary resonance frequency within the first specified frequency band.
- the printed monopole antenna may include more than one radiating element formed on the printed circuit board side opposite of the parasitic element.
- Figs. 1-3 depict a printed monopole antenna 10 of the type which can be utilized with radio transceivers, cellular phones, and other personal communication equipment having multiple frequency bands of operation.
- printed monopole antenna 10 includes a printed circuit board 12, which preferably is planar in configuration and has a first side 14 (see Fig. 1) and a second side 16 (see Fig. 2).
- printed monopole antenna 10 includes a monopole radiating element in the form of a first conductive trace 18 formed on first side 14 of the printed circuit board 12.
- a non-resonant parasitic element is formed on second side 16 of printed circuit board 12.
- first conductive trace 18 has a physical length l 1 from a feed end 22 to an opposite open end 24.
- First conductive trace 18 may have a linear configuration in which its electrical length is substantially equivalent to physical length l 1 , or it may optionally have a non-linear configuration (as shown in Fig. 1) in which the electrical length therefor is greater than physical length l 1 .
- This non-linear type of conductive trace is explained in greater detail in a patent application entitled "Antenna Having Electrical Length Greater Than Its Physical Length," U.S. Serial No. 08/459,959, filed concurrently herewith, which is also owned by the assignee of the present invention and hereby incorporated by reference.
- first conductive trace 18 will have a primary resonance within a first specified frequency band.
- first conductive trace 18 will have an electrical length which is substantially equivalent to a quarter-wavelength or a half-wavelength for a frequency within the first specified frequency band.
- Parasitic element 20, as seen in Fig. 2, covers a specified area of printed circuit board second side 16 in order to tune first conductive trace 18 to have a secondary resonance within a second specified frequency band. Accordingly, it will be understood that the placement of parasitic element 20 along printed circuit board second side 16, as well as the overall size thereof, may be varied in order to achieve the desired frequency band for the secondary resonance of first conductive trace 18. However, it has been found that parasitic element 20 has the greatest effect by being positioned at or adjacent to the open end of printed circuit board 12.
- parasitic element 20 is preferably made of a conductive material, it is not resonant itself since it is substantially smaller in size than the wavelength corresponding to the operating frequency of printed monopole antenna 10 (preferably less than 10% of such wavelength). Accordingly, the physical length l 2 of parasitic element 20 is approximately 10% or less than physical length l 1 of first conductive trace 18. It follows then, that physical length l 2 of parasitic element 20 is approximately 10% less than the electrical length of first conductive trace 18.
- parasitic element 20 substantially covers printed circuit board second side 16 from a first point 26 to a second point 28.
- Fig. 4 depicts a design in which parasitic element 20 only partially covers printed circuit board second side 16 from first point 26 to second point 28.
- parasitic element 20 By positioning parasitic element 20 on printed circuit board second side 16, it affects the frequency band at which first conductive trace 18 has a secondary resonance. In this way, such secondary resonance may be tuned to occur within a second frequency band that does not include an integer multiple of the primary resonance frequency. This occurs even though there is no direct electrical connection between first conductive trace 18 and parasitic element 20.
- first and second frequency bands Preferably, the first frequency band will be approximately 800 MegaHertz to approximately 1,000 MegaHertz while the second frequency band will be approximately 1,800 MegaHertz to approximately 2,000 MegaHertz. Other frequency bands may be utilized for the second frequency band so that printed monopole antenna 10 can communicate with satellites, such as between approximately 1500 MegaHertz and approximately 1600 MegaHertz or between approximately 2400 MegaHertz and 2500 MegaHertz.
- first conductive trace 18 will preferably have an electrical length substantially equivalent to either a quarter-wavelength or a half-wavelength of a center frequency within the first frequency band.
- Printed monopole antenna 10 also preferably includes a feed port 30, such as in the form of a coaxial connector, which includes a signal feed portion 32 and a ground portion 34. As best seen in Fig. 1, signal feed portion 32 of feed port 30 is coupled only to first conductive trace 18 such as the center conductor of a coaxial connector.
- printed circuit board 12 be made of a flexible dielectric material such as polyamide, polyester, or the like. It is also preferred that first conductive trace 18, parasitic element 20, and printed circuit board 12 be overmolded with a low-loss dielectric material, as further described in a patent application entitled “Method Of Manufacturing A Printed Antenna,” U.S. Serial No. 08/460,578, filed concurrently herewith, which is also owned by the assignee of the present invention and hereby incorporated by reference. In this regard, printed monopole antenna 10 is schematically depicted in Fig. 3 as being attached in its final form to a radio transceiver 40.
- FIG. 5 An alternative configuration for printed monopole antenna 10 is depicted in Fig. 5, where a second conductive trace 36 is formed adjacent to first conductive trace 18 on printed circuit board first side 14.
- First and second conductive traces 18 and 36 are preferably oriented substantially parallel to each other and have substantially equivalent physical lengths. It will be understood that parasitic element 20 not only may be utilized to affect the frequency band at which secondary resonance occurs for first conductive trace 18, but also for second conductive trace 36. Further, as indicated hereinabove, no direct electrical connection exists between parasitic element, 20 and first or second conductive traces 18 and 36. Likewise, no direct electrical connection exists between first and second conductive traces 18 and 36.
- first and second conductive traces 18 and 36 may have different physical lengths to better distinguish the frequency bands of resonance therefor, but the main criteria is that they have different electrical lengths. As such, it will be seen that at least one of first and second conductive traces 18 and 36 will have a physical length less than its electrical length. Of course, as seen in Fig. 5, at least one of first and second conductive traces 18 and 36 may have an electrical length substantially equivalent to its physical length.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Claims (31)
- Antenne unipolaire imprimée comprenant une plaquette de circuit imprimé (12) ayant une première face (14) et une seconde face (16), et un élément rayonnant unipolaire comprenant une piste conductrice (18) formée sur la première face (14) de la plaquette de circuit imprimé, cette piste conductrice (18) ayant une longueur électrique de façon à avoir une résonance primaire dans une première bande de fréquence spécifiée, caractérisée en outre par :
un élément parasite non rayonnant (20) formé sur la seconde face (16) de la plaquette de circuit imprimé, cet élément parasite (20) recouvrant une zone spécifiée de façon à accorder la piste conductrice (18) de manière qu'elle ait une seconde résonance dans une seconde bande de fréquence spécifiée. - Antenne unipolaire imprimée selon la revendication 1, dans laquelle la piste conductrice (18) a une longueur physique à partir d'une extrémité d'alimentation (22) jusqu'à une extrémité opposée (24) qui équivaut pratiquement à la longueur électrique de la piste conductrice (18).
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la piste conductrice (18) a une longueur physique à partir d'une extrémité d'alimentation (22) jusqu'à une extrémité opposée (24) qui est inférieure à la longueur électrique de la piste conductrice (18).
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la première bande de fréquence spécifiée est d'environ 800 mégahertz à environ 1000 mégahertz.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la seconde bande de fréquence spécifiée est d'environ 1800 mégahertz à environ 2000 mégahertz.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la longueur électrique de la piste conductrice (18) équivaut pratiquement à un quart de longueur d'onde pour une fréquence dans la première bande de fréquence spécifiée.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la longueur électrique de la piste conductrice (18) équivaut pratiquement à la moitié d'une longueur d'onde pour une fréquence dans la première bande de fréquence spécifiée.
- Antenne unipolaire imprimée selon la revendication 1, comprenant en outre un accès d'alimentation (30) incluant une partie de transmission de signal (32) et une partie de masse (34), la partie de transmission de signal (32) étant couplée seulement à la piste conductrice (18).
- Antenne unipolaire imprimée selon la revendication 8, dans laquelle l'accès d'alimentation (30) comprend un connecteur coaxial.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la plaquette de circuit imprimé (12) est constituée par un matériau diélectrique flexible.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la plaquette de circuit imprimé (12), la piste conductrice (18) et l'élément parasite (20) sont surmoulés.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) est constitué par un matériau conducteur.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) a une longueur physique approximativement égale à dix pour cent ou moins de la longueur électrique de la piste conductrice.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) est positionné sur la plaquette de circuit imprimé (12) à une extrémité (24) opposée à une extrémité d'alimentation (22) de la piste conductrice.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) a une longueur physique approximativement égale à dix pour cent ou moins d'une longueur physique de la piste conductrice (18).
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) recouvre pratiquement la seconde face (16) de la plaquette de circuit imprimé à partir d'un premier point (26) jusqu'à un second point (28) sur sa surface.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) recouvre partiellement la seconde face (16) de la plaquette de circuit imprimé à partir d'un premier point (26) jusqu'à un second point (28) sur sa surface.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la seconde bande de fréquence spécifiée ne contient pas un multiple entier de la fréquence de résonance primaire dans la première bande de fréquence spécifiée.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle l'élément parasite (20) est positionné et configuré pour accorder une réponse résonnante secondaire, ou de mode supérieur, de la piste conductrice (18) sur une seconde fréquence spécifiée qui ne comprend pas un multiple entier d'une fréquence dans la première bande de fréquence spécifiée.
- Antenne unipolaire imprimée selon la revendication 1, dans laquelle la plaquette de circuit imprimé (12) est pratiquement plane et comprend une extrémité d'alimentation (22) et une extrémité ouverte (24), caractérisée en outre par :
une pluralité d'éléments rayonnants unipolaires, chaque élément rayonnant unipolaire comprenant une piste conductrice (18, 36) formée sur la première face (14) de la plaquette de circuit imprimé, chaque piste conductrice ayant une longueur électrique spécifiée de façon à avoir une résonance primaire dans une première bande de fréquence désignée. - Antenne unipolaire imprimée selon la revendication 20, dans laquelle les pistes conductrices (18, 36) sont orientées de façon pratiquement parallèle les unes aux autres.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle les pistes conductrices (18, 36) ont des longueurs physiques pratiquement équivalentes.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle l'une au moins des pistes conductrices (18, 36) a une longueur physique particulière.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle il n'existe aucune connexion électrique directe entre la pluralité d'éléments rayonnants unipolaires.
- Antenne unipolaire imprimée selon la revendication 20, comprenant en outre un accès d'alimentation (30) comprenant une partie de transmission de signal (32) et une partie de masse (34), la partie de transmission de signal étant couplée à une seule des pistes conductrices (18, 36).
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle l'une au moins des pistes conductrices (18, 36) a une longueur physique inférieure à sa longueur électrique.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle l'une au moins des pistes conductrices (18, 36) a une longueur physique qui équivaut pratiquement à sa longueur électrique.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle l'élément parasite (20) est positionné sur la plaquette de circuit imprimé (12) à l'extrémité ouverte (24).
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle l'élément parasite (20) recouvre pratiquement la seconde face (16) de la plaquette de circuit imprimé à partir d'un premier point (26) jusqu'à un second point (28) sur sa surface.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle l'élément parasite (20) recouvre partiellement la seconde face (16) de la plaquette de circuit imprimé à partir d'un premier point (26) jusqu'à un second point (28) sur sa surface.
- Antenne unipolaire imprimée selon la revendication 20, dans laquelle la résonance secondaire pour chaque piste conductrice a lieu à une fréquence qui n'est pas un multiple entier de la fréquence de résonance primaire respective.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45955395A | 1995-06-02 | 1995-06-02 | |
US459553 | 1995-06-02 | ||
PCT/US1996/008058 WO1996038882A1 (fr) | 1995-06-02 | 1996-05-30 | Antenne unipolaire imprimee multibande |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0829113A1 EP0829113A1 (fr) | 1998-03-18 |
EP0829113B1 true EP0829113B1 (fr) | 2001-12-12 |
Family
ID=23825260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96916805A Expired - Lifetime EP0829113B1 (fr) | 1995-06-02 | 1996-05-30 | Antenne unipolaire imprimee multibande |
Country Status (8)
Country | Link |
---|---|
US (1) | US6100848A (fr) |
EP (1) | EP0829113B1 (fr) |
JP (1) | JP3753436B2 (fr) |
CN (1) | CN1150660C (fr) |
AU (1) | AU705191B2 (fr) |
BR (1) | BR9609272A (fr) |
DE (1) | DE69617947T2 (fr) |
WO (1) | WO1996038882A1 (fr) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE509638C2 (sv) | 1996-06-15 | 1999-02-15 | Allgon Ab | Meanderantennanordning |
GB2317994B (en) * | 1996-10-02 | 2001-02-28 | Northern Telecom Ltd | A multiresonant antenna |
US5963168A (en) * | 1997-01-22 | 1999-10-05 | Radio Frequency Systems, Inc. | Antenna having double-sided printed circuit board with collinear, alternating and opposing radiating elements and microstrip transmission lines |
JPH10247808A (ja) * | 1997-03-05 | 1998-09-14 | Murata Mfg Co Ltd | チップアンテナ及びその周波数調整方法 |
EP0863571B1 (fr) * | 1997-03-05 | 2006-04-12 | Murata Manufacturing Co., Ltd. | Dispositif d'image mobile et dispositif d'antenne utilisée pour un tel dispositif d'image |
GB2323476B (en) * | 1997-03-20 | 2002-01-16 | David Ganeshmoorthy | Communication antenna and equipment |
US6329962B2 (en) | 1998-08-04 | 2001-12-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Multiple band, multiple branch antenna for mobile phone |
SE511131C2 (sv) | 1997-11-06 | 1999-08-09 | Ericsson Telefon Ab L M | Portabel elektronisk kommunikationsanordning med flerbandigt antennsystem |
SE511068C2 (sv) * | 1997-11-06 | 1999-08-02 | Ericsson Telefon Ab L M | Portabel elektronisk kommunikationsanordning med dubbelbandigt antennsystem |
FI112983B (fi) * | 1997-12-10 | 2004-02-13 | Nokia Corp | Antenni |
JPH11234026A (ja) | 1997-12-18 | 1999-08-27 | Whitaker Corp:The | デュアルバンドアンテナ |
US6304222B1 (en) | 1997-12-22 | 2001-10-16 | Nortel Networks Limited | Radio communications handset antenna arrangements |
US6061036A (en) * | 1998-02-03 | 2000-05-09 | Ericsson, Inc. | Rigid and flexible antenna |
US6353443B1 (en) * | 1998-07-09 | 2002-03-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Miniature printed spiral antenna for mobile terminals |
US6166694A (en) * | 1998-07-09 | 2000-12-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Printed twin spiral dual band antenna |
FI981835A (fi) * | 1998-08-27 | 2000-02-28 | Lk Products Oy | Radiolaitteen antenni ja menetelmä sen valmistamiseksi sekä radiolaite |
US6091370A (en) * | 1998-08-27 | 2000-07-18 | The Whitaker Corporation | Method of making a multiple band antenna and an antenna made thereby |
DE59910116D1 (de) * | 1998-09-08 | 2004-09-09 | Siemens Ag | Antenne für funkbetriebene Kommunikationsendgeräte |
US6343208B1 (en) | 1998-12-16 | 2002-01-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Printed multi-band patch antenna |
US6181282B1 (en) * | 2000-01-28 | 2001-01-30 | Tyco Electronics Corporation | Antenna and method of making same |
US6184836B1 (en) * | 2000-02-08 | 2001-02-06 | Ericsson Inc. | Dual band antenna having mirror image meandering segments and wireless communicators incorporating same |
US6459413B1 (en) * | 2001-01-10 | 2002-10-01 | Industrial Technology Research Institute | Multi-frequency band antenna |
TW513827B (en) | 2001-02-07 | 2002-12-11 | Furukawa Electric Co Ltd | Antenna apparatus |
KR20030063752A (ko) * | 2002-01-23 | 2003-07-31 | 김봉용 | 평면형 안테나 |
US20040157524A1 (en) * | 2003-02-06 | 2004-08-12 | The Procter & Gamble Company | Fibrous structure comprising cellulosic and synthetic fibers |
US7057560B2 (en) * | 2003-05-07 | 2006-06-06 | Agere Systems Inc. | Dual-band antenna for a wireless local area network device |
TW568389U (en) * | 2003-05-09 | 2003-12-21 | Hon Hai Prec Ind Co Ltd | Multi-band printed monopole antenna |
US20050099335A1 (en) * | 2003-11-10 | 2005-05-12 | Shyh-Jong Chung | Multiple-frequency antenna structure |
JP2005229161A (ja) * | 2004-02-10 | 2005-08-25 | Taiyo Yuden Co Ltd | アンテナ及び当該アンテナを有する無線通信機器 |
TWI238564B (en) * | 2004-05-18 | 2005-08-21 | Tatung Co Ltd | Multi-frequency printed antenna |
CN1734836B (zh) * | 2004-08-10 | 2010-11-17 | 富士康(昆山)电脑接插件有限公司 | 天线 |
CN100555744C (zh) * | 2004-11-18 | 2009-10-28 | 富士康(昆山)电脑接插件有限公司 | 天线及其阻抗匹配方法 |
US7277058B2 (en) * | 2004-12-30 | 2007-10-02 | Motorola, Inc. | Wireless communication device antenna for improved communication with a satellite |
US7777689B2 (en) | 2006-12-06 | 2010-08-17 | Agere Systems Inc. | USB device, an attached protective cover therefore including an antenna and a method of wirelessly transmitting data |
US7420521B2 (en) * | 2007-01-08 | 2008-09-02 | Applied Radar Inc. | Wideband segmented dipole antenna |
JP2008278411A (ja) | 2007-05-07 | 2008-11-13 | Mitsumi Electric Co Ltd | アンテナ装置 |
CN102074786B (zh) * | 2009-11-19 | 2013-05-08 | 雷凌科技股份有限公司 | 用于电子装置的双频印刷电路天线 |
JP2011120072A (ja) * | 2009-12-04 | 2011-06-16 | Panasonic Corp | 携帯無線機 |
US8674890B2 (en) * | 2010-04-30 | 2014-03-18 | Motorola Solutions, Inc. | Wideband and multiband external antenna for portable transmitters |
WO2014076635A1 (fr) * | 2012-11-15 | 2014-05-22 | Poynting Antennas (Pty) Limited | Agencement d'antennes polarisé transversal large bande |
JP2014153294A (ja) * | 2013-02-13 | 2014-08-25 | Mitsubishi Heavy Ind Ltd | 電磁誘導式位置検出器の検出位置補正方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4860020A (en) * | 1987-04-30 | 1989-08-22 | The Aerospace Corporation | Compact, wideband antenna system |
US4849765A (en) * | 1988-05-02 | 1989-07-18 | Motorola, Inc. | Low-profile, printed circuit board antenna |
JP2809365B2 (ja) * | 1992-09-28 | 1998-10-08 | エヌ・ティ・ティ移動通信網株式会社 | 携帯無線機 |
ATE250809T1 (de) * | 1993-05-27 | 2003-10-15 | Univ Griffith | Antennen für tragbare kommunikationsgeräte |
WO1996038881A1 (fr) * | 1995-06-02 | 1996-12-05 | Ericsson Inc. | Antenne unipolaire imprimee multibande |
US5709832A (en) * | 1995-06-02 | 1998-01-20 | Ericsson Inc. | Method of manufacturing a printed antenna |
-
1996
- 1996-05-30 CN CNB961956631A patent/CN1150660C/zh not_active Expired - Lifetime
- 1996-05-30 EP EP96916805A patent/EP0829113B1/fr not_active Expired - Lifetime
- 1996-05-30 DE DE69617947T patent/DE69617947T2/de not_active Expired - Lifetime
- 1996-05-30 AU AU59557/96A patent/AU705191B2/en not_active Expired
- 1996-05-30 WO PCT/US1996/008058 patent/WO1996038882A1/fr active IP Right Grant
- 1996-05-30 JP JP53666296A patent/JP3753436B2/ja not_active Expired - Lifetime
- 1996-05-30 BR BR9609272A patent/BR9609272A/pt not_active IP Right Cessation
-
1998
- 1998-03-20 US US09/044,417 patent/US6100848A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0829113A1 (fr) | 1998-03-18 |
AU5955796A (en) | 1996-12-18 |
CN1150660C (zh) | 2004-05-19 |
US6100848A (en) | 2000-08-08 |
JP3753436B2 (ja) | 2006-03-08 |
DE69617947D1 (de) | 2002-01-24 |
WO1996038882A1 (fr) | 1996-12-05 |
AU705191B2 (en) | 1999-05-20 |
DE69617947T2 (de) | 2002-06-20 |
BR9609272A (pt) | 1999-05-11 |
CN1191633A (zh) | 1998-08-26 |
JPH11506283A (ja) | 1999-06-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0829113B1 (fr) | Antenne unipolaire imprimee multibande | |
EP0829112B1 (fr) | Antenne unipolaire imprimee multibande | |
WO1996038882A9 (fr) | Antenne unipolaire imprimee multibande | |
US5557293A (en) | Multi-loop antenna | |
US6218992B1 (en) | Compact, broadband inverted-F antennas with conductive elements and wireless communicators incorporating same | |
EP3474372B1 (fr) | Antenne pour système radio portable et procédé de fabrication associé | |
US6204826B1 (en) | Flat dual frequency band antennas for wireless communicators | |
AU708520B2 (en) | Printed monopole antenna | |
US6380903B1 (en) | Antenna systems including internal planar inverted-F antennas coupled with retractable antennas and wireless communicators incorporating same | |
US7755545B2 (en) | Antenna and method of manufacturing the same, and portable wireless terminal using the same | |
US6268831B1 (en) | Inverted-f antennas with multiple planar radiating elements and wireless communicators incorporating same | |
EP1590857B1 (fr) | Structure d'antenne dipolaire a deux frequences et a profil bas | |
US5898408A (en) | Window mounted mobile antenna system using annular ring aperture coupling | |
US6229487B1 (en) | Inverted-F antennas having non-linear conductive elements and wireless communicators incorporating the same | |
WO2005048398A2 (fr) | Structure d'antenne multibande | |
US20050237244A1 (en) | Compact RF antenna | |
JPH11150415A (ja) | 多周波アンテナ | |
US6563466B2 (en) | Multi-frequency band inverted-F antennas with coupled branches and wireless communicators incorporating same | |
US20020123312A1 (en) | Antenna systems including internal planar inverted-F Antenna coupled with external radiating element and wireless communicators incorporating same | |
US20070126640A1 (en) | Planar antenna structure | |
KR20230067692A (ko) | 안테나 디바이스, 안테나 디바이스들의 어레이 | |
CN108400436B (zh) | 天线模块 | |
US7149540B2 (en) | Antenna | |
CA2263055A1 (fr) | Antennes cadres a large bande et a fentes pour systemes de communications sans fil |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19971111 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT SE |
|
17Q | First examination report despatched |
Effective date: 19981215 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT SE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
REF | Corresponds to: |
Ref document number: 69617947 Country of ref document: DE Date of ref document: 20020124 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020530 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020530 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20150528 Year of fee payment: 20 Ref country code: DE Payment date: 20150528 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20150519 Year of fee payment: 20 Ref country code: IT Payment date: 20150527 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69617947 Country of ref document: DE |